MUSTANG GT500 2007-2009 WHIPPLE DS STAGE 4 open filter inlet whine mod kit 75% WHINE INCREASE SKU 155 Universal Kits but opening the existing hole

but opening the existing hole to 1/38” increases whine

No drilling through the firewall

Foster SC mods will assist with install and developing the parts needed to complete an install on various makes and models of vehicle and superchargers not currently developed

Sealed sound tube with special diaphragm cap installed on end of sound tube inside cabin

when an unknown printer took a galley of type and scrambled it to make a type specimen book

MUSTANG GT500 2007-2009 WHIPPLE DS STAGE 4 open filter inlet whine mod kit 75% WHINE INCREASE SKU 155 Universal Kits but opening the existing holeIncreases the in cabin rotor sound by up to 75% Foster SC Stage 4 Kit works on both closed air box and open filter or aftermarket CAI systems. Drilling through the firewall required. Connects from inlet pipe through the OEM sound tube location. Sealed sound tube with special diaphragm cap installed on end of sound tube inside cabin. For drivers side supercharger inlets setups.